Steam-pump.



No. 630,812. Patented Aug. a, |899;4

P. LUDWIG.

STEAM PUMP.

(Applicativi: ledlar. 5, 1898.)

4 Sheets-Sheet IL W/T/VESSESl /N VENTH TTOHNEY.

No. 630,8!2. Patented Aug. 8, |899. P. LUDWIG.

STEAM PUMP.

(Appumiun med nu. 5, 189s.)

(No Model.) 4 Sheets-Sheet 2` W/TNSSES l I 4N VEA/TOP @2M 1ra/vw www BYno. sso,a|2. Patented Aug. s, |899.

P. LUDWIG.

STEAM PUMP.

[Applicatcn filed Mar. .5. 1898.)

(No Model.) 4 Sheets-Sheet 3l W/T/VESSES /N VEA/TOR am/W4 WWA 3y fn:norms mins cn, PNc1ouTMo..vv Asnmcron, o. c.

Patented Aug. 8, |899,

No. 63mm.

P. LUDWIG.

STEAM PUMP.

(Application med Mar. 5, 1898.)

4 Sheets-Sheet 4.

(No Model.)

f UNITED STATES PATENT OFFICE.

PETER LUDWIG, OF CHICAGO, ILLINOIS.

STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 630,812, dated August8, 1899.

Application tiled March 5, 1898. Serial No. 672,624. (No model.)

T0 all whom, t may concern.' A

Be it known that I, PETER LUDWIG, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new Steam-Pump in Conjunction with a new Valve-Gear and othernew Featnres,of which the following is aspect cation.

My invention relates to improvements in duplex steam-pumps in which bothsides of the pump may be operated in connection with each other by theintermediate valve-gear, or either of the two sides may be cut outentirely and only one side operated, or each side may be workedindependent of the other under different piston speeds,pumping differentliquids. By the arrangement made in the eX- haust connection the pumpmay be Worked as condensing without using an additional vacuum orcirculating pump. I attain such objects by the mechanism illustrated inthe accompanying drawings, in Which- Figure 1 is a side elevation of thepump. Fig. 2 is a front elevation of the pump; Figs. 3 and 4, a frontand side view of the pistonrod clamp with guide-block; Figs. 5 and 6, afront and side View of the end pieces for the connecting-rods; Figs. 7andS, a' plan and sectional View of the pump-piston;v Fig. 9, a frontView of the stuiiing-box Withhandles; Fig. 10, a side elevation of thegland with screwed end; Fig. 11, a cross-section of a gland with iianged end Fig. 12, a plan view of same 3 Fig. 13, a` detailed view of thewrist-bar; Fig.

14, a cross-section of the pump; Fig. 15, a

longitudinal sectional elevation of the pump along the axis of thepiston-chambers.

Similar letters of reference indicate like parts in the several views.

The steam-cylinder casing a, the exhaust chamber b, the latter servingas a standard or leg, the pump-cylinder casing c, with the air-chambersd and e, and the suction-chamber f constitute, in conjunction with thecenter pieces g and h, the framework of the pump. The pump in itsgeneral features is the same as any other pump, but diifers from thepumps now in use in so far as two different liquids may be pumped at thesame time under different piston speeds and either one or both sides maybe worked condensing without the attachment of a vacuum or circulatingpump.

The steam-cylinders are provided with the Corliss type of valves; butinstead of having the connecting-rods of the valve-cranks connected to awrist-plate they are connected to the rocking bars c' and t on bothsides of the cylindercasing- Said rocking bars il and 7a are connectedto the bent levers m and n bythe rods o and p. The bent levers m and nare fastened to the rocking shafts q and r. To the latter therocker-arms s and t are also fastened. The rocker-arms s andconsist of acenter piece and two side pieces or slides, the latter being adjustablein order to take up the wear of the blocks u and a. A detailed view ofone of these guide-blocks, with the clamps 'o and the bolts w, is shownin Figs. 3 and 4:. These clamps o and w are fastened to the piston-rodsa; and y.

The reciprocating motion of the piston-rods a: and fy is transformed toa rocking motion of the rocker-arms s. and t, as can be readily seen.From there the motion is transmitted to the valves by the bent levers mand n, the rods o and p, and the rocking barst` and la.

The connecting-rods o and p are provided on their ends with pieces a',a', b', and c', the latter having a slot to hook them to thecorresponding bolts. This arrangement is made for the purpose ofallowing the pump to be changed rapidly from duplex to single, or viceversa.

The standard n d serves as bearing for the rockenshafts q and r and isfastened to the center pieces g and h.

The above is a general description of the pump Working duplex. Inorderto work each side of the pump independent from the other, the rodso and p have to be unhooked from the bent levers m and n and the upperends of the rocking bars t' and 7c and hooked into the bolts of theguide-blocks u and u and the bolts in the lower end of the rocking barsi and 7c. This connection is indicated by the dotted lines in Figs. 1and 2. After the valvegear has undergone the above alteration in theconnections either side, or both, may be used as single pumps, and, ifdesirable, two different liquids may be lifted and discharged at thesame time and at different piston speed. The steam for the cylinders issupplied by the pipes e andf. The exhaust is carried away to theatmosphere by the pipes g and h', or

IOO

where circumstances allow it the exhauststeam may beled into thesuction-chamberf -by the pipes il and 71,', so that the steam compipesections z" and la are made separate and detachable from the body of thepump, and tothis end the respective valves l', m', n', and o arearranged in the body portion of the pump-in manner indicated in Fig. l5,so as to control communication with such exhaustpipe sections, so thatwhen said valves are closed the said pipe-'sections can be detachedwithout affecting in the least the action of the pump-in anon-condensing manner, as heretofore described. The inlet for thesuction is through the opening p and q in the two sides and r and s infront of the suctionchamber. t' and fu are hand-holes in thesuction-chamber f for the purpose of getting access to the inside ofsaid chamber in order to remove the sand, &c. which mayaccumulate, sothat the base f serves also the purposes of "Ma mud-catcher.

The discharge from the pump-cylinder is through the openings w and fr onboth sides of the pump-cylinder casing.

The steam-cylinder casing a, the pumpcylinder casing c, and theair-chamber j", with the exhaust-chamber b, are provided in the middlewith partitions, so that each side is entirely independent from theother.

The piston for the pump, as shown in Figs. 7 and 8, consists of thepiston-head y', secu red Iirmly to the piston-rod, the follower-head 2',loosely tted to the rod, and the elastic packing a2. Said parts y', z',and a2 are held together by four bolts. By tightening these four boltsthe elastic packing will be pressed together, and consequently increaseits'diameter. In order to set the elastic packing, it is necessary toremove the cylinder-head only.

The gland, as shown in Figs. 9, l0, l1, and l2 in different views, isused all over the pump wherever a gland is necessary, and the same maybe applied on any similar piece of machinery wherever needed. Thestulng-box proper, b2, screws into the casing c2 instead of screwingover the outside of same. The metallic ring f2 will prevent thestung-box from cutting into the packing when the latter is screwed in.Said stuffing-box Z22 is provided with handles cl2, as vshown in Figs. 9and l0, and obviates the use of a wrench. The casing c2 may be made withscrewed end, Fig. l0, or with anged end, as shown in Figs. ll and 12.

Ifam aware that prior to my invention duplex pumps have been constructedso that one side only could be set working. I am also aware that priorto my inventionsteam-pumps have had their exhaust-steam passage of thesteam-cylinder connected to the outlet-passage of the water-cylinder. Itherefore make no claim broadly to such feature of construction; but,

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a duplex steam-pump, the combina-v tion with a pair of cylinders,their series of rockingvalves, and the actuating mechanisms therefor, ofa pair of rocking bars common to the series of valves, and provided withupper'` and lower wrist-pins or bolts, a pair of rockin g leversactuated by thepiston-rod, and provided with corresponding upper andlower wrist-pins or bolts, and a pair of connectingrods adapted toengage either the upperolif lower set of wrist-pins or bolts, tochan-gethe operation ofthe pump from a normal duplex'V into a separateand independent action, sub-i stantially as set forth.

` 2. In a valve mechanism for duplex steamA pumps, substantially asherein described,` the combination of steam-cylinders, steam-chests,

steam-valves, valve-actu ating. mechanismsr,`a

pair of valve-operating bars provided with upper and lower wrist-pins orbolts, a pair of piston-actuated levers provided with correspondingupper and lower wrist-pins or bolts, and a pair ofconnecting-rods'adapted-to engage either the upper or lower set ofwrist'- pins or bolts, substantially as set forth.

3. In a valve mechanismfor duplex steaml pumps, as herein described,the-combination of steam cylinders, steam chests,steamvalves,valveactuating mechanisms, apa-ir olil valve-operating barsprovidedwithupper and` lower wrist-pins or bolts, a pair ofpiston-actuated levers provided with corresponding upper and lowerwrist-pins or bolts, anda pair of connecting-rods formed withhook-shaped` ends and adapted to engage-either the upperl or lower setof wrist-pins or bolts, substantially as set forth. n

4. In a valve mechanism for duplex steampumps, substantially as hereindescribed?, the

combination of steam-cylinders, steam-chests, steam-valves,valve-actuating mechanisms, af guide-block carried by the piston-rod,anda rocking arm of the valve mechanism provided with adjustable sidepieces or slides, that en- I lo gage said guide-block, substantially asset inderprovided withau ndividualcontrollingvidual controlling-valvesin their exhaustvalve in its exhaust-passage, the suetionpassages, thesuction-chambers of the duplex chamber of the pump-cylinder providedwith pump-cylinders provided with individual an individual valvecontrolling a passage pipe connections between said passages se- 5therefrom, and a pipe connection between cured detaehably in place,substantially as 15' said passages secured detaehably in place, setforth.

Substantially as set forth. PETER LUDWIG.

7. In a duplex steam-pump, substantially W'itnesses: as hereindescribed, the combination of the GASPAR POECKER,

1o duplex steam-cylinders provided with indi- HERMAN C. D. FASH.

